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Intangible Assets (Details 2) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Dec. 31, 2012
Amortization expense for each of the five years through December 31, 2018 and thereafter      
Years ended December 31, 2014   $ 4,183  
2015   4,061  
2016   3,968  
2017   3,789  
2018   3,788  
Thereafter   12,045  
Net Carrying Value $ 30,005 $ 31,834 $ 36,227